Towards optimal filtering of "standard" multifocal electroretinogram (mfERG) recordings: findings in normal and diabetic subjects
نویسندگان
چکیده
منابع مشابه
The Multifocal Electroretinogram (mfERG): Applications and Limitations
What Is the mfERG? The electroretinogram (ERG) is a mass potential, the result of the summed electrical activity of the cells of the retina. Typically, the clinical ERG is elicited by full-field (Ganzfeld) flashes of light. With an appropriate selection of test and background lights, rod and cone function can be assessed separately. As the ganglion cells contribute relatively little to the full...
متن کاملRetinal function in normal and diabetic eyes mapped with the slow flash multifocal electroretinogram.
PURPOSE It has been suggested that late components of the standard multifocal electroretinogram (mfERG) are preferentially affected by diabetes mellitus. The slow-flash (sf-)mfERG stimulates with flashes separated by dark periods, facilitating interpretation of late first-order response components compared with standard multifocal stimulation. Retinal function and response component changes wer...
متن کاملMultifocal electroretinogram in normal emmetropic subjects: Correlation with optical coherence tomography
AIM OF THE STUDY To establish the normative database for multifocal electroretinogram (mfERG) parameters in a normal emmetropic population. To correlate the data so obtained with the central macular thickness obtained using the optical coherence tomography (OCT) scan. MATERIALS AND METHODS mfERG data were obtained from 222 eyes of 111 emmetropic subjects. The amplitude (nv/deg 2 ) and implici...
متن کاملMultifocal electroretinograms in normal subjects.
Multifocal electroretinography (ERG), developed by Sutter in 1992, is a method of recording the spatial distribution of focal ERG in a short time period using multi-input stimulation. Using this technique, we can detect the spatial extent and severity of damage to the macula. In this study, we recorded multifocal ERGs from 20 eyes of 20 normal subjects and analyzed the topographical properties ...
متن کاملMultifocal electroretinogram in clinically significant diabetic macular edema.
OBJECTIVE To explore the multifocal electroretinogram in patients with nonproliferative diabetic retinopathy with clinically-significant macular edema. METHODS Forty-one eyes with clinically significant macular edema were tested. The latencies and amplitudes of average responses of 5 eccentric rings from 0 to 26 degrees relative to the fixation point were compared with normal values obtained ...
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ژورنال
عنوان ژورنال: British Journal of Ophthalmology
سال: 2004
ISSN: 0007-1161
DOI: 10.1136/bjo.2003.026625